Get annotated parameters inside a pointcut
Solution 1
I modeled my solution around this other answer to a different but similar question.
MethodSignature signature = (MethodSignature) joinPoint.getSignature();
String methodName = signature.getMethod().getName();
Class<?>[] parameterTypes = signature.getMethod().getParameterTypes();
Annotation[][] annotations = joinPoint.getTarget().getClass().getMethod(methodName,parameterTypes).getParameterAnnotations();
The reason that I had to go through the target class was because the class that was annotated was an implementation of an interface and thusly signature.getMethod().getParameterAnnotations()
returned null.
Solution 2
final String methodName = joinPoint.getSignature().getName();
final MethodSignature methodSignature = (MethodSignature) joinPoint
.getSignature();
Method method = methodSignature.getMethod();
GuiAudit annotation = null;
if (method.getDeclaringClass().isInterface()) {
method = joinPoint.getTarget().getClass()
.getDeclaredMethod(methodName, method.getParameterTypes());
annotation = method.getAnnotation(GuiAudit.class);
}
This code covers the case where the Method belongs to the interface
Bobby
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Updated on December 05, 2020Comments
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Bobby over 3 years
I have two annotation
@LookAtThisMethod
and@LookAtThisParameter
, if I have a pointcut around the methods with@LookAtThisMethod
how could I extract the parameters of said method which are annotated with@LookAtThisParameter
?For example:
@Aspect public class LookAdvisor { @Pointcut("@annotation(lookAtThisMethod)") public void lookAtThisMethodPointcut(LookAtThisMethod lookAtThisMethod){} @Around("lookAtThisMethodPointcut(lookAtThisMethod)") public void lookAtThisMethod(ProceedingJoinPoint joinPoint, LookAtThisMethod lookAtThisMethod) throws Throwable { for(Object argument : joinPoint.getArgs()) { //I can get the parameter values here } //I can get the method signature with: joinPoint.getSignature.toString(); //How do I get which parameters are annotated with @LookAtThisParameter? } }